Spring construction



June 6, 1933. H; F, HAGER ET A 1,913,353

SPRING CONSTRUCTION Filed Feb. 20, 1933 IN VENTORS.

ATTORNEYS.

Fatented June 6, 19 33 UNITED STATES PATENT OFFICE HENRY I. HAGER, OF TRENTON, AND CHARLES F. MCCOY, OF PENNINGTON, NEW JERSEY, ASSIGNOBS TO TRENION SPRING PRODUCTS COMTANY, OF TREN'ION, NEW JERSEY, A CORPORATION OF NEW JERSEY SPRING CONSTRUCTION Application filed February 20, 1933/ Serial No. 657,578.

This invention relates to a spring unit construction in which the so-called rigid border wires are not necessary and in which the end coils of the coil springs, if they be of the double conical ty e, are arranged for union into a relatively at and form retaining arrangement.

One object of the invention is to unite adjacent coils in adjacent rows by a connection that comprises two serpentine ortions associated with a helix that encirc es said serpentine portions and secures the serpentine portions in nested relation so that the end portions of adjacent coil springs are united together, but are prevented from lateral slipping, and which are united to ether by an arrangement that has a hinged e ect.

Another object of the invention is to unite adjacent substantially tangential coils in the same row by a helix that encircles the adjacent portions of said coils which are of serpentine formation, and which are nested together, thereby providing a hinge arrangement.

The chief feature of the invention consists in the formation of serpentine portions in adjacent portions of adjacent coils and associating therewith a helix that encircles both serpentine portions and that retains the adjacent serpentine portions in nested relation and usually in substantially a common plane transverse to the axes of the coil springs.

The full nature of the invention will be understood from the accompanying drawing and the following description and claims In the drawing, Fig. 1 is a top plan View of one corner of a spring construction embodying the invention.

Fig. 2 is a similar view of a modified form thereof, the coil springs in rows being tangential in this form, whereas in the form shown in Fig. 1 the coil springs in each row are in spaced relation.

Fig. 3 is an elevational view of one of the springs illustrated in Fig. 1. a

In Fig. 1 of the drawing, there is illustrated a plurality of double conical coils 10 and each end coil thereof includes at least a pair of diametrically positioned serpentine portions 11 and 12. The border coils may, if

desired, have in this form of the invention a straight portion 13 and the end of the coil is anchored as at 14 adjacent an offset portion 15, as shown. One border element includes a helix 16 that encircles the aligned strai ht portions 13 of the coils. amociated with the border coils at right angles to the first mentioned border coils and is associated with the serpentine portions.

The two serpentine portions 11 and 12 of adjacent substantially tangential coils in the present form of the invention, are nested together and, as illustrated, lie in a common plane substantially transverse to the axes of said coils. A helix 18 unites the two nested serpentine portions 11 and 12 of each coil by encircling the same, as shown. The helix extends between the rows of adjacent coils, the adjacent coils in each row in Fig. 1 being illustrated free of each other, or of a connection therebetween at their adjacent portions, so that the coils in each row may be spaced from each other as desired. As s own in Fig. 1, the intermediate or inner coils of the spring cushion embodying the inv2ention may have an end terminating as at 0.

In Fig. 2 there is illustrated a modified form of the invention, wherein each coil 110 has a pair of diametrically opposed serpentine portions 111 and 112, and also is provided with a pair of intermediate diametrically opposed serpentine portions 121 and 122. One border wire 117 is associated with serpentine portions 111 of the end or border coils of the unit. Another helix 116 is associated with the serpentine portions 121 of the transversely arranged border coils. If desired, either or both of these particular portions of the border coils may be formed straight, as illustrated at 13 in Fig. 1.

The ad'acent serpentine portions 111 and 112 of adjacent coils are nested together and herein lie in a plane transverse to the axes of said coils and the helix 118 encircles said nested serpentine portions and secures them together. The adjacent serpentine portions 121 and 122 also are nested together and a short helix 124 having ends anchored as at Another helix 1 is 125 to one or the other or both coils, is associated with the nested serpentine portions 121 and 122 and encircles the same. This forms the equivalent of a hinge connection and with this form of the invention, the end coil of one spring cannot be depressed without depressing the end coil of the adjacent and tangential spring in the same row.

When the spring construction is enclosed within a casing of fabric or the like, the border helixes 116 and 117 may be omitted in the modification shown in Fig. 2 and likewise the intermediate helix 118 may be omitted, but when the latter is omitted, some form of connection must be provided. This may be similar to that shown at 124 or may be a clip that not only secures the two adjacent portions together, but also secures the respective springs to the fabric covering. It

the adjacent portions of adjacent coils in adjacent rows need not be formed with a serpentine portion.

The invention generically, therefore, con- IJ sists of providing in a spring cushion unit a pair of adjacent springs, each having a serpentine portion tangentially associated together and with the serpentine portions nested and encircled and firmly united by an encircling helix.

The invention claimed is 1. In a spring cushion construction, the combination of a plurality of coil springs, the end coil of each spring including a portion having a serpentine formation consisting of a series of waves or undulations, the serpentine portions of adjacent springs 1ying in a plane substantially transverse to the spring axes and nested together, and a helix common to the nested serpentine portions and encircling the same in said nested and contracting relation, the successive turns of the encircling portion of the helix nesting in the successive undulations.

2. In a spring cushion construction, the combination of a plurality of rows of coil springs, the springs in each row being substantially tangential to each other and tangential to adjacent springs in adjacent rows, the adjacent portions of each end coil of the coil springs having a serpentine formation consisting of a series of waves or undulations lying in a plane substantially transverse to the axes of the coil and adjacent serpentine portions of adjacent coils being nested together, and helix means encircling the adjacent nested serpentine portions of adjacent coils, the successive turns of the encircling portion of each helix nesting in the successive undulations, each helix means havingits opposite ends anchored about an end coil adjacent the nested serpentine portion thereof and the helix means being arranged will be obvious that if the helix 118 is omitted,

from coil to coil in the same row and the transverse helixes between the coils of the same row terminating at each end of the transversely arranged serpentine portions of the end coil of the connected coils in each row.

3. In a spring construction, the combination of a pluralit of coil springs, one end of each substantia ly tangentially contacting an adjacent spring and having a serpentine formation consisting of a series of waves or undulations, said tangentially contacting serpentine portions of adjacent springs being identical and nested, and a small bore helix means completely encircling the nested ortions, the turns of the circling portion of the helix nesting in the successive undulations of the nested serpentine formations for locking the end coils together.

4. In a spring construction, the combination of a plurality of coil springs, one end coil of each spring having a serpentine formation consisting of a series of waves or undulations, said serpentine portions of adjacent springs contacting and being identical and nested for a plurality of successive waves, and small bore means completely encircling the successive wave nested portions, said means nesting about the nested wave portions for locking said serpentine forma- 95 tions together at a plurality of points.

5. In a spring construction, a plurality of coil springs, the end coils of each spring contacting with the corresponding coils of adjacent springs, said contacting portions be- 1 ing of identical serpentine formation, each serpentine portion comprising a lurality of undulations, the undulations of said portions lying in a common plane and interfitting in snug positive engagement with each 1 other throughout the extent of said portions, and means for holding said serpentine portions together in snug and positive engagement.

In witness whereof, we have hereunto af- 11 fixed our signatures.

HENRY F. HAGER. CHARLES F. MCCOY.

transversely of each other, certain of said 65 helix means being elongated and extending 

